Epitaxial directional growth of tin oxide (101) nanowires on titania (101) substrate
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- Epitaxial directional growth of tin oxide (101) nanowires on titania (101) substrate
- Kim, Won-Sik; Kim, Daihong; Choi, Kyoung Jin; Park, Jae-Gwan; Hong, Seong-Hyeon
- Directional growth; Dye-Sensitized solar cell; Electronic device; Epitaxially grown; Gas sensors; Growth directions; Heteroepitaxial relationships; Inclination angles; Interface structures; Li-ion batteries; Lift-Out techniques; Orientation relationship; TEM; Tetragonal crystal structure; TiO; Titania; Vapor-liquid-solid growth; Well-aligned; X ray pole figures
- Issue Date
- AMER CHEMICAL SOC
- CRYSTAL GROWTH & DESIGN, v.10, no.11, pp.4746 - 4751
- Highly aligned single crystal SnO(2) (101) nanowires were epitaxially grown on TiO(2), (101) substrates by thermal evaporation via Au-catalyzed vapor-liquid-solid (VLS) growth. The orientation relationship and interface structure between the nanowires and the substrate were determined by X-ray pole figure and high resolution transmission electron microscopy (HR-TEM) combined with the focused ion beam (FIB) lift-out technique. Epitaxially grown SnO(2) (101) nanowires exhibited three angular growth directions (, , and ) with different inclination angles to the substrate due to a tetragonal crystal structure. An atomic stacking model was proposed to describe the angular growth of SnO2 (101) nanowires with (101) growth directions. The obtained results arc expected to provide an understanding or the growth direction of nanowires and heteroepitaxial relationships between nanowires and substrate to synthesize the well-aligned SnO2 nanowires. which can be integrated into the electronic devices and lead to enhanced properties in the fields such its Li-ion batteries, dye-sensitized solar cells, and gas sensors.
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